Bobbin and yarn package



^ pose to appear hereinafter.

HQW D. COLMAN, OF ROCKFRI,

. 1.44am rarest oFFica.

ILINGIS, ASSIGNGR, BY MESNE ASSXGNMENTS, nlyFtBEIt-COLME GF BECEFGRB, HLINIS,

tiled. may 17, 1915, Serial Ilo.

To mit w/iom t maag: comer/t:

Be it known that l, HOWARD D. Conn-AN, a citizen of the United States, residing Rockford, in the county of Vlinnebago State of Illinois, have invented certain nen and useful Improvements in Bo'bbins and Yarn Packages, of which the following 1s a specification.

Une of the objects of this invention 1s to produce a yarn package especially adapted to facilitate the dofling operation and arranged for use in apparatus (as, `or erample, a weft-replenishing loom) wherein the end of the thread of the package is to be mechanically found.

Another object of the invention is to provide a bobbin especially adapted for the mechanical finding of the thread-end.

' n the accompanying drawings, Figure 1 is an elevation of a bobbin and yarn package embodying thefeatures of my invention. Fig. 2 is `a longitudinal central section. Fig. 3 is a view taken from the tip end of the bobbin. Fig. 4 is a frag-mental View of the tip of the bobbin upon an enlarged scale.

The embodiment herein shown of the invention comprises a bobbin partaking of the general form of a standard weft or filling bobbin and comprising a butt l and an upwardly tapering body or barrel 2 terminating in a tip 3. The bobbin may be constructed of wood, as usual. A rounded shoulder or annular surface 4 is provided at the junction of the butt 1 and the body 2. The tip 3 is provided with a suitable number of longitudinal grooves or flutings 5 which terminate upon the tapered end 6 of the tip. Preferably the grooves 5 are formed in the periphery of a metallic sleeve 7. The periphery of the sleeve, i. e., that portion upon which the end-finder coll is to be wound, is tapered slightly toward its outer end (as shown in Fig. 4), for a pur- While various constructions may be used, the Wooden body is herein shown as having a cylindrical. end 8 of reduced diameter forming an annular shoulder 9. The diameter of the shoulder 9 is the same as that of the inner end ofthe sleeve 7. The inner end of the sleeve is counterbored to form an annular tapering surface 10. The grooves 5 lextend to the extreme inner end of the sleeve and thereby produce a series of points 11 which embed themselves in the shoulder 9 when the sleeve Renewed September 13, 1920. Serial ftt.

7 is forced in place, thus leaving ne exposed points or projections on which the yarn might catch. i

ln forming my improved package, a supply yarn mass a of the standard or any snitable form is wound upon the body ot the bobbin. A small mass of yarn 5 is then. wound upon lthe grooved portion of the tip 3 at 4a substantial distance from the yarn mass a, the grooves 5 extending beneath the mass o. Said mass b is connected to the yarn massa by means of a strand c. A few turns of yarn e are then wound. upon the bobbin upon or adjacent to the lower end of the yarn mass a. To distinguish the coii e from the yarn mass a, the former is indicated by heavy lines in Fig. 1. The coil e is connected to the coil Zn by means of a strand d. As will be understood, when the bobbin is in place on the spindle of'the spinning machine, the strand f extends from the front drawing roll, through the traveller, to the coil e. The yarn, e is of such length that when the bobbin is lifted off the spindle, all, or substantially all, of the. coil e will slip off the shoulder 4 and become wrapped around the spindle. Vhen an empty bobbin is placed upon the spindle, said wraps of yarn e become clamped between the spindle and the empty bobbin, whereupon the operator completes the operation of doiing the full bobbin by pulling the bobbin away from the spindle, thus breaking the strand d.

lVhen the bobbin has been placed in the apparatus wherein the end of the thread is to be found, as, for example, a. loom, the coil or yarn mass l) is strippedy off the tip 3 by suitable means suc-h as a. hook or cluster of hooks (not shown). Said hooks approach the yarn mass b by movement longitudinally of the bobbin tip and yield laterally to pass ove-r said yarn mass. The reason for slightly tapering the portion of the sleeve 7 on which the yarn mash Z1 is wound is to preventy said yarn mass from being pushed toward the yarn mass a by the hooks. When the direc-tion of movement of the hooks is reversed, the yarn mass b is drawn off the tip 3, the points of the hooks traveling through the grooves 5 and thus obtaining an effective hold upon the yarn mass b. As the yarn mass is drawn ott the tip 3, it is followed by the strand c constituting the found end and also by the strand d. Inasmuch as the lli) yarn aft c vvas practically only suxicient to serve the purpose-of connecting the yarn to the empty bobbin,there is Substantially no yarn e remaining upon the bobbin to un- Wind in the endftinding operation. lt aneigce-ssive amount of yarn ey were Wound upon the bobbin, the atrand in unvvindin'g 'under the strand el might break.V lf the strand d broke, the remnant of yarn e Would either break the weft thread or be Woven into the cloth'. lf neither of the strands'c and al broke, there would be formed a strand oi' greater or less length .(d plus e) `which would trail along with the found end c.. li this strand were ot excessive length it would reach into thecloth` and cause a detect therein.

While the -invention has been herein disclosed in connection with a filling bobbin, it. will be understood that the invention is a not limited thereto, but may be embodied its outer end. l

in a Warp bobbin, and\that the` package herein shown may be advantageously `employed in other textile apparatus than looms.

l claim as luy-invention: -v having, in combination, a

body having a. reduced upper. end-portion forming an annular shoulder, anda metallic sleeve fitting tightly upon said reduced end portion, the inner end of said sleeve being counterbored, said sleevehaving a peripheral l series of longitudinal grooves extending to4 the counterbo-red end of the sleeve,

whereby a series of points are produced upon the inner end of the sleeve, said points being ernbedded in the'bobbin body. Y

2. A. bobbin having, in combination, a body having shoulder and al metallic sleeve fitting tightly upon saidreduced end and abutting said shoulder, said slee-ve being provided with a peripheral series 'of longitudinal grooves andthe upper end of the sleeve being tapared.

A bobbin having, in combination, a body and a'metall'ic tip, portion of said tip being longitudinally grooved and being s ightly tapered toward 4.; a bobbin having, in Combination, a body and a tip, the yarn-receiving portion of said tip being longitudinally grooved and slightly. tapered toward its outer end,

a I'educed'upperend forming a the yarn-receiving y body 'and a tip tinder coil, said tip having a. peripheral series 5. A. bobbin, having, in combination, a body adapted to carry a yarn inassan'd a tip yadapted to carry' a coil oit yarn, .said tip having a peripheral series oflongitudinal grooves adapted extend under such operation, and a strand connecting the endnder coil to the dotling'yarn coil.

7. A bobbin having, V.in combination, a Wooden-body 'having a reduced cylindrical upper end-portion forming an annular sho-ulder, and a metallic sleeve driven tightly upon said reducedend-portion, and extending to said shoulder, said sleeve having a peripheral series of longitudinal grooves.

8. A bobbin havmg, 1n combination, a

body having a reduced cylindrical upper end-portion, and a metallic sleeve driven upon said reduced end-portion, said sleeve having a peripheral series of longitudinal grooves.

9. A bobbin having, in combination, a wooden body having a reduced cylindrical. upper end forming a shoulder and a metallic sleeve driven tlghtly upon said reduced end and abutting said shoulder, said sleeve being provided with al peripheral series o longitudinal grooves.

10. A bobbin having, in combination, a body having a reduced cylindrical upper end forming a shoulder and a metallic sleeve driven tightly upon said reduced end and v abutting saidshoulder.

l1. A bobbin having, in combination, a body and ainetallic tip adapted to carry an end finder coil, the yarn receiving portion of said tip being longitudinally grec-ved.

' l2. A 'bobbin having, in combination, a adapted to carry an end of longitudinal grooves.

ln testimony whereof, l have hereunto set my hand.

normen D. coni/inn. 

